International Journal of Engineering Sciences & Research Technology (IJESRT)
Cloud computing opens a new era in IT as it can provide various elastic and scalable IT services in a pay-as-the user-go fashion, where the users can reduce the huge capital investments in their own IT infrastructure. The users of cloud storage services have no control over their data, which makes data security, one of the major concerns of using cloud. The existing system allows data integrity to be verified without possession of the actual data file. The verification done by a trusted third party is called data auditing, and the third party is called an auditor.